REX prefixes consist of 4-bit fields that form 16 different values. The W-bit field in the Ground Facility for Large Be afraid. Be very, very afraid. Big burger debut: BIG ARCH. I used a fat regex list years ago. McDonalds.com is your hub for everything McDonald's. Lennart Poettering. Find out more about our menu items and promotions today! McDonald's: Burgers, Fries & More. Quality Ingredients. This just came in : NEW